Nighttime construction activities will take place on Monday, December 7, causing lane closures on the Dulles Toll Road (DTR), Dulles International Airport Access Highway (DIAAH) and Autopilot Drive.

Lane closures on the eastbound DIAAH as it leaves the airport will begin at 9 p.m. From 10 p.m. to 5 a.m., traffic will be diverted to eastbound Aviation Drive, and then to the new ramp at the north end of Windsock Drive to access the eastbound DIAAH and the Dulles Toll Road.

Between 9 p.m. to 5 a.m., the northbound and southbound lanes of Autopilot Drive just north of the Budget driveway and just south of the Enterprise driveway will be closed to allow work to continue on the Dulles Corridor Metrorail Project Aerial Guideway. Detour signage, flaggers and police will be in place to guide local and through traffic to their destination.

Please stay alert, obey all signage and drive carefully.

All work is weather dependent and subject to change.

Dulles International Airport Access Highway (DIAAH) East

When: Monday, December 7- Tuesday, December 8, 9 p.m. to 5 a.m.
What: Two left lanes closed at 9 p.m. From 10 p.m. to 5 a.m., full closure of eastbound lanes with traffic diverted to eastbound Aviation Drive then to new ramp to the eastbound DIAAH
Where: From mile marker 0.1 to 0.4 (from Saarinen Circle to 1/10 mile before the Rudder Road overpass)
Why: Aerial guideway construction

When: Monday, December 7 – Tuesday, December 8, 9 p.m. to 5 a.m.
What: Northbound lanes closed and full closure of northbound and southbound lanes at north end of Autopilot Drive.
Where: Northbound lanes of Autopilot Drive from Rudder Road to Materials Road will be closed. All local traffic to facilities along Autopilot Drive will be diverted to the southbound lane. Northbound and southbound lanes of Autopilot Drive will be closed from just north of the Budget driveway to just south of the Enterprise driveway; traffic will be diverted around the closure as appropriate. Police, flaggers and signage will be in place to direct traffic.
Why: Aerial guideway construction

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A 24/7 Hotline is available for Dulles Corridor Metrorail Project Phase 2 construction-related issues: 844-385-7245. For general project information: www.dullesmetro.com or 703-572-0506.